On Thu, 18 Feb 2021 08:52:53 +0000,
Greg KH <gre...@linuxfoundation.org> wrote:
[...]
> Ok, how about this:
>
>
> diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
> index 2fcf66473436..86c7f0489620 100644
> --- a/fs/debugfs/inode.c
> +++ b/fs/debugfs/inode.c
> @@ -297,7 +297,7 @@ struct dentry *debugfs_lookup(const char *name, struct
> dentry *parent)
> {
> struct dentry *dentry;
>
> - if (IS_ERR(parent))
> + if (!debugfs_initialized() || IS_ERR_OR_NULL(name) || IS_ERR(parent))
> return NULL;
>
> if (!parent)
> @@ -318,6 +318,9 @@ static struct dentry *start_creating(const char *name,
> struct dentry *parent)
> if (!(debugfs_allow & DEBUGFS_ALLOW_API))
> return ERR_PTR(-EPERM);
>
> + if (!debugfs_initialized())
> + return ERR_PTR(-ENOENT);
> +
> pr_debug("creating file '%s'\n", name);
>
> if (IS_ERR(parent))
>
That one boots correctly in a guest.
Thanks,
M.
--
Without deviation from the norm, progress is not possible.
